which_pattern: Which regex pattern first matches string
In avidclam/amxtra: Useful R helper functions

Description Usage Arguments Value Examples

For each element in the string vector, this function finds which pattern is the first to match it using grepl. Thus pattern order influences the results.

1	which_pattern(string, pattern)

`string`	vector of strings to match against patterns
`pattern`	vector of patterns to match strings

Numeric index of the pattern to first match each string or NA if no match found.

which_pattern(month.name, c("^J", "[A,a]", "[O,o]"))
# [1]  1  2  2  2  2  1  1  2 NA  3  3 NA

which_pattern(month.name, c("[A,a]", "^J", "[O,o]"))
#[1]  1  1  1  1  1  2  2  1 NA  3  3 NA